Rotary compressor

Rotary expansible chamber devices – Multistage – Sliding abutment

Reexamination Certificate

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Details

C418S060000, C418S094000, C184S006160

Reexamination Certificate

active

10770129

ABSTRACT:
A so-called internal intermediate pressure multistage compression type rotary compressor makes it possible to prevent the pressure inside a roller from inconveniently increasing and also to permit smooth and reliable supply of oil into a cylinder of a second rotary compressing element by a relatively simple construction. A lubrication groove for providing communication between an oil bore and a low-pressure chamber in the cylinder is formed in a surface of an intermediate partitioner that is adjacent to the cylinder of the second rotary compressing element. Furthermore, a through bore for providing communication between a hermetically sealed vessel and the inside of the roller is formed in the intermediate partitioner.

REFERENCES:
patent: 5242280 (1993-09-01), Fujio
patent: 5685703 (1997-11-01), Fukuoka et al.
patent: 6732542 (2004-05-01), Yamasaki et al.
patent: 2003/0068236 (2003-04-01), Tadano et al.
patent: 2004/0071576 (2004-04-01), Matsumoto et al.
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patent: 2002-276578 (2002-09-01), None
patent: 2003097476 (2003-04-01), None
Communication—European Search Report dated Jul. 9, 2004.

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